@font-face {
  font-family: "Scoutie Sans";
  src: url('ScoutieSans.woff2') format('woff2');
  font-weight: 200 800;
  font-style: normal;
}

:root {
  --bg: #f4f3f1;
  --panel: #ffffff;
  --ink: #131b24;
  --ink-soft: #5a626e;
  --border: #d9d6d1;
  --accent: #096df9;
  --danger: #fa7a64;
  --radius: 8px;
  font-family: "Scoutie Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

.app {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.app-header h1 {
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
}

.preview-pane {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.canvas-wrap {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(45deg, #eee 25%, transparent 25%) 0 0/16px 16px,
    linear-gradient(-45deg, #eee 25%, transparent 25%) 0 0/16px 16px,
    linear-gradient(45deg, transparent 75%, #eee 75%) 0 0/16px 16px,
    linear-gradient(-45deg, transparent 75%, #eee 75%) 0 0/16px 16px;
  background-color: #fafafa;
  border-radius: var(--radius);
  overflow: hidden;
}

.canvas-wrap.dragover {
  outline: 2px dashed var(--accent);
  outline-offset: -2px;
}

/* Once an image is loaded, drop the checkerboard/centering box so nothing
   but the image itself shows — just anchor it to the top and center it
   horizontally in case its height is capped below the wrap's full width. */
.canvas-wrap.has-image {
  min-height: 0;
  background: none;
  align-items: flex-start;
}

#previewCanvas {
  max-width: 100%;
  max-height: 70vh;
  display: none;
  image-rendering: pixelated;
}

#previewCanvas.has-image {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100vh;
}

.dropHint {
  text-align: center;
  color: var(--ink-soft);
}

.dropHint p { margin: 4px 0; }
.hint-small { font-size: 12px; color: #9aa1a9; margin: 0; }

.dropHint.hidden { display: none; }

.btn {
  background: var(--ink);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.btn:hover:not(:disabled) { background: #2a3542; }
.btn:disabled { background: #cfd3d8; cursor: not-allowed; }

.btn-small {
  padding: 6px 10px;
  font-size: 12px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
}
.btn-small:hover:not(:disabled) { background: #f0f0f0; }

#uploadBtn {
  width: 100%;
}

.download-group {
  display: flex;
  gap: 8px;
}

.download-group .btn {
  flex: 1;
}

.controls-pane {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.control-group { display: flex; flex-direction: column; gap: 8px; }

.group-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.hint-inline {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  font-size: 11px;
  color: #9aa1a9;
}

.group-label .value {
  font-weight: 400;
  color: var(--ink);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.segmented {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.seg-btn {
  flex: 1;
  border: none;
  background: transparent;
  padding: 9px 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  color: var(--ink-soft);
}

.seg-btn.active {
  background: var(--ink);
  color: #fff;
}

.palette-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.palette-row {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #faf9f8;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
}

.swatch {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: 1px solid var(--border);
  flex: 0 0 auto;
  display: inline-block;
}

.hex-label {
  flex: 1;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 12px;
  color: var(--ink-soft);
}

.remove-btn {
  border: none;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0 2px;
}
.remove-btn:hover:not(:disabled) { color: var(--danger); }
.remove-btn:disabled { color: #ddd; cursor: not-allowed; }

.add-color-wrap {
  position: relative;
}

.add-color-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 10;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 160px;
}

.add-color-menu.hidden {
  display: none;
}

.add-color-option {
  display: flex;
  align-items: center;
  gap: 8px;
  border: none;
  background: transparent;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 12px;
  color: var(--ink);
  text-align: left;
}

.add-color-option:hover {
  background: #f0f0f0;
}

.app-footer {
  text-align: center;
  margin-top: 30px;
  font-size: 11px;
  color: #9aa1a9;
}